CN109820228A - The bulk curing barn temperature and humidity sensing line of resistance frequency interference - Google Patents
The bulk curing barn temperature and humidity sensing line of resistance frequency interference Download PDFInfo
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- CN109820228A CN109820228A CN201910033816.7A CN201910033816A CN109820228A CN 109820228 A CN109820228 A CN 109820228A CN 201910033816 A CN201910033816 A CN 201910033816A CN 109820228 A CN109820228 A CN 109820228A
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- sheathed cable
- temperature
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Abstract
The invention discloses a kind of bulk curing barn temperature and humidity sensing lines of resistance frequency interference, including connecting terminal, black heat-shrinkable T bush, No.1 deconcentrator, 6 core grey sheathed cable, No. two deconcentrators, 4 core grey sheathed cable, 3 core grey sheathed cable, lower canopy chip, upper canopy chip and frequency converter interference processing unit, frequency converter interference processing unit is placed outside on the circuit board being connected with this sensing line, Conduction Interference during hothouse baking from frequency converter can be solved the problems, such as by simple frequency converter interference processing unit, it is simple, easy-to-use, effect is obvious.
Description
Technical field
The present invention relates to barns to control equipment technical field, and the bulk curing barn temperature and humidity of specifically a kind of resistance frequency interference passes
Feel line.
Background technique
Heavy-duty diode rectification, high power transistor inversion are carried out in frequency converter, the result is that in input and output circuit
Generate electric current higher hamonic wave, interference power supply system, load and other adjacent to electrical equipment.In actual use, it often meets
The problem of interfering sensor to harmonics of inverter.
1. harmonics of inverter mechanism of production:
The main circuit of frequency converter be generally cross-straight-intersection composition, the power frequency supply of external input 380V/50Hz through three-phase bridge not
Controlled rectification is the friendship of changeable frequency through filter capacitor filtering and high power transistor switch element inversion at d. c. voltage signal
Flow signal.In commutating circuit, the waveform of input current is irregular rectangular wave, and waveform is decomposed into fundamental wave by fourier series
And each harmonic, higher hamonic wave therein is by exogenous disturbances power supply system.In inversion output loop, output current signal be by
The impulse waveform of PWM carrier signal modulation, for GTR high power contravariant element, the carrier frequency of PWM is 2~3kHz, and
The PWM highest carrier frequency of IGBT high power contravariant element is up to 15kHz.Equally, output loop current signal also can be analyzed to containing only
The fundamental wave of sine wave and other each harmonics, and higher harmonic current is to load direct interference.In addition higher harmonic current is also logical
It crosses cable to radiate to space, interferes neighbouring electrical equipment.
2. inhibiting the common method of harmonic wave interference:
The route of transmission of harmonic wave is conduction and radiation, solves Conduction Interference and mainly the high-frequency current of conduction is filtered in circuit
Or isolation；Solving radiation interference is exactly to shield to radiation source or disturbed route.Specific common method: (1) frequency conversion
The power supply of system and the power supply of other equipment are mutually indepedent, or pacify in frequency converter and the input side of other electrical equipments
Isolating transformer is filled, harmonic current is cut off.(2) suitable reactor is concatenated with outlet side in frequency converter input side, or install humorous
Wave filter, the composition of filter must be LC types, absorb harmonic wave and increase the impedance of power supply or load, reach and inhibit harmonic wave
Purpose.(3) cable should wear steel pipe laying or with armored cable between motor and frequency converter, and with other weak electric signals in difference
Cable duct lay respectively, avoid radiation interference.(4) signal wire uses shielding line, and controls when wiring with main circuit of frequency converter
Line is staggered certain distance (at least 20cm or more), cuts off radiation interference.(5) frequency converter uses Special grounding wire, and with tubbiness line
The ground wire of ground connection, other neighbouring electrical equipments must be separated with frequency converter wiring, use short-term.It can effectively inhibit electric current humorous in this way
Radiation interference of the wave to adjacent equipment.
Summary of the invention
The object of the present invention is to provide a kind of bulk curing barn temperature and humidity sensing lines of resistance frequency interference.It solves in the prior art roasting
Room is using frequency converter later to the interference problem of Temperature Humidity Sensor.
The technical scheme adopted by the invention is that: a kind of bulk curing barn temperature and humidity sensing line of resistance frequency interference, including connect
Line terminals, black heat-shrinkable T bush, No.1 deconcentrator, 6 core grey sheathed cable, No. two deconcentrators, 4 core grey sheathed cable, 3 core grey
Sheathed cable, lower canopy chip, upper canopy chip and frequency converter interference processing unit, the connecting terminal black heat-shrinkable T bush pyrocondensation add
With protection, 6 core grey sheathed cable are connect with No.1 deconcentrator, and No.1 deconcentrator connects lower canopy chip by 3 core grey sheathed cable,
No.1 deconcentrator connects No. two deconcentrators by 4 core grey sheathed cable, and No. two deconcentrators connect upper canopy by 3 core grey sheathed cable
Chip, the frequency converter interference processing unit are arranged in 6 core grey sheathed cable, are placed outside on circuit board.
The frequency converter interference processing unit includes Temperature Humidity Sensor, probe power ground wire GND and capacitor, temperature and humidity
Sensor includes upper canopy temperature Q1, upper canopy humidity Q2, lower canopy temperature Q3, lower tetra- signal wires of canopy humidity Q4, upper canopy temperature Q1, on
Canopy humidity Q2, lower canopy temperature Q3, lower canopy humidity Q4 pass through capacitor C1, capacitor C2, capacitor C3, capacitor C4 connection sensor electricity respectively
The size of source ground wire GND, each capacitor are 470PF, i.e. C1=C2=C3=C4.
The frequency converter interference processing unit is 500mm apart from connecting terminal front end distance.
The present invention is on the basis of original Temperature Humidity Sensor takes twisted wire and shielding line eliminates radiation interference by passing
The suitable position attached with frequency converters of sensor interferes processing unit, efficiently solves biography during hothouse baking from frequency converter
Lead interference problem, it is simple, easy-to-use, effect is obvious.
Detailed description of the invention
Fig. 1 is overall structure figure of the invention；
Fig. 2 is frequency converter interference processing unit connection principle schematic diagram of the present invention；
Fig. 3 is frequency converter interference processing unit internal structure schematic illustration of the present invention；
In figure: 1- connecting terminal, 2- black heat-shrinkable T bush, 3- No.1 deconcentrator, 4-6 core grey sheathed cable, No. bis- deconcentrators of 5-,
Canopy chip, the upper canopy chip of 9- under 6-4 core grey sheathed cable, 7-3 core grey sheathed cable, 8-.
Specific embodiment
The present invention is described in detail for 1-3 and specific embodiment with reference to the accompanying drawing:
As shown in Figure 1, the bulk curing barn temperature and humidity sensing line of resistance frequency interference of the invention, by connecting terminal 1, black thermal shrinkable sleeve
Pipe 2,3,6 core grey sheathed cable 4 of No.1 deconcentrator, No. two 5,4 core grey sheathed cable of deconcentrator, 6,3 core grey sheathed cable 7, lower canopy
Chip 8, upper canopy chip 9 and frequency converter interference processing unit composition,
It is illustrated in figure 2 frequency converter interference processing unit internal structure chart, Q1, Q2, Q3, Q4 are respectively the upper of Temperature Humidity Sensor
Four canopy temperature, upper canopy humidity, lower canopy temperature, lower canopy humidity signal wires, GND are probe power ground wire.To Q1, Q2, Q3, Q4
Four lines install capacitor C1, C2, C3, C4 additional with GNG respectively.The size relation of four capacitors is C=C1=C2=C3=C4, and capacitor
Size be 470PF.
In Fig. 3, the red core of the red line and No. 1 sensor of No. 1 hole machine of rubber shell and 6 core grey jacket cables is opposite
It answers, the red core of the green line and No. 2 sensors of No. 2 hole machines of rubber shell and 6 core grey jacket cables is corresponding, No. 3 holes of rubber shell
The red core of the yellow line and No. 3 sensors of machine and 6 core grey jacket cables is corresponding, No. 4 hole machines of rubber shell and 6 core grey shield
The red core of the blue line and No. 4 sensors that cover cable is corresponding, the black of No. 5 hole machines of rubber shell and 6 core grey jacket cables
The green core of line and 1,2,3, No. 4 sensor is corresponding, the white wire of No. 6 hole machines of rubber shell and 6 core grey jacket cables and 1,
2, the white core of 3, No. 4 sensors is corresponding, is asked using this device by the interference that verifying can effectively deal with frequency converter repeatedly
Topic.
The present invention is elaborated above in conjunction with specific embodiment, but the present invention is not limited to above-described embodiment,
Those of ordinary skill in the art within the scope of knowledge, can also make various without departing from the purpose of the present invention
Variation.
Claims (3)
1. a kind of bulk curing barn temperature and humidity sensing line of resistance frequency interference, which is characterized in that including connecting terminal (1), black fever
Heat-Shrinkable Tubings (2), No.1 deconcentrator (3), 6 core grey sheathed cable (4), No. two deconcentrators (5), 4 core grey sheathed cable (6), 3 cores ash
Color sheathed cable (7), lower canopy chip (8), upper canopy chip (9) and frequency converter interference processing unit, the connecting terminal (1) use black
Heat-shrinkable T bush (2) pyrocondensation is protected, and 6 core grey sheathed cable (4) are connect with No.1 deconcentrator (3), and No.1 deconcentrator (3) passes through
3 core grey sheathed cable (7) connect lower canopy chip (8), and No.1 deconcentrator (3) connects No. two separated times by 4 core grey sheathed cable (6)
Device (5), No. two deconcentrators (5) pass through canopy chip (9) in 3 core grey sheathed cable (7) connections, the frequency converter interference processing unit
It is arranged in 6 core grey sheathed cable (4), is placed outside on circuit board.
2. the bulk curing barn temperature and humidity sensing line of resistance frequency interference according to claim 1, which is characterized in that the frequency conversion
It includes Temperature Humidity Sensor, probe power ground wire GND and capacitor that device, which interferes processing unit, and Temperature Humidity Sensor includes upper canopy temperature
Spend Q1, upper canopy humidity Q2, lower canopy temperature Q3, lower tetra- signal wires of canopy humidity Q4, upper canopy temperature Q1, upper canopy humidity Q2, lower canopy temperature
Degree Q3, lower canopy humidity Q4 pass through capacitor C1, capacitor C2, capacitor C3, capacitor C4 connection probe power ground wire GND respectively, described
The size of each capacitor is 470PF, i.e. C1=C2=C3=C4.
3. the bulk curing barn temperature and humidity sensing line of resistance frequency interference according to claim 1, which is characterized in that the frequency conversion
Device interference processing unit is 500mm apart from connecting terminal (1) front end distance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910033816.7A CN109820228A (en) | 2019-01-15 | 2019-01-15 | The bulk curing barn temperature and humidity sensing line of resistance frequency interference |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910033816.7A CN109820228A (en) | 2019-01-15 | 2019-01-15 | The bulk curing barn temperature and humidity sensing line of resistance frequency interference |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109820228A true CN109820228A (en) | 2019-05-31 |
Family
ID=66861033
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910033816.7A Pending CN109820228A (en) | 2019-01-15 | 2019-01-15 | The bulk curing barn temperature and humidity sensing line of resistance frequency interference |
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| Country | Link |
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Citations (6)
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| CN104135148A (en) * | 2014-07-17 | 2014-11-05 | 青岛歌尔声学科技有限公司 | USB (Universal Serial Bus) interface circuit |
| CN205483321U (en) * | 2016-01-26 | 2016-08-17 | 深圳市科敏传感器有限公司 | High reliability temperature sensor |
| CN205788617U (en) * | 2016-06-17 | 2016-12-07 | 无锡圣敏传感科技股份有限公司 | Sensing cable |
| CN207010543U (en) * | 2017-07-18 | 2018-02-13 | 深圳市双向诚科技有限公司 | A kind of low harmony wave is gradually bright to fade off LED dimming drivers |
| CN108827397A (en) * | 2018-08-27 | 2018-11-16 | 广州西博臣科技有限公司 | A kind of electromagnetism interference and erosion-resisting Temperature Humidity Sensor |
| US20190312115A1 (en) * | 2018-04-04 | 2019-10-10 | Murata Manufacturing Co., Ltd. | Semiconductor apparatus |
-
2019
- 2019-01-15 CN CN201910033816.7A patent/CN109820228A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104135148A (en) * | 2014-07-17 | 2014-11-05 | 青岛歌尔声学科技有限公司 | USB (Universal Serial Bus) interface circuit |
| CN205483321U (en) * | 2016-01-26 | 2016-08-17 | 深圳市科敏传感器有限公司 | High reliability temperature sensor |
| CN205788617U (en) * | 2016-06-17 | 2016-12-07 | 无锡圣敏传感科技股份有限公司 | Sensing cable |
| CN207010543U (en) * | 2017-07-18 | 2018-02-13 | 深圳市双向诚科技有限公司 | A kind of low harmony wave is gradually bright to fade off LED dimming drivers |
| US20190312115A1 (en) * | 2018-04-04 | 2019-10-10 | Murata Manufacturing Co., Ltd. | Semiconductor apparatus |
| CN108827397A (en) * | 2018-08-27 | 2018-11-16 | 广州西博臣科技有限公司 | A kind of electromagnetism interference and erosion-resisting Temperature Humidity Sensor |
Non-Patent Citations (2)
| Title |
|---|
| 蔡建国主编: "《电子设备结构与工艺》", 31 August 2003, 湖北科学技术出版社 * |
| 郑小年等: "《数控机床故障诊断与维修》", 28 February 2013, 华中科技大学出版社 * |
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Application publication date: 20190531 |
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